Letter-file.



No. 851,870. PATENTBJJ APR.-30, 1907. J. J. nETTWYLER-BRDERLIN.

LETTER PILE.

APPLIoATIoN FILED JULY 24, 1905.

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U N ITE@ STATES PATENT TWICE,

LETTER-FILE.

Speecation of Letters Patent.

Patented April 30, 1907'.

Application filed July 24, 1905. Serial No. 271.076.

To all whom t n1/(ty concern:

Be it known that I, JOHANN J'axon Dn'r'rwYLnn-BRDERLIN, a citizen oi'the Swiss Republic, residing at Sissach, Canton Baselland, Switzerland,have invented certain new and useful Improvements in Letter- Files, ofwhich the following is a specification.

The present invention relates to a letter iile wherein the documents arenot periorated but are held in a sheet metal frame by means of a springpressed bar, the latter being connected by the spring to a hinged wallot said frame.

The invention is shown in the annexed drawing in which Figure 1 is aplan view of the letter 'File with the covers opened. Fig. 2 is a sideelevation thereof with the trame partly broken away. Figs. 3 and 4 are aside elevation and plan respectively', of the hinged wall ot' the sheetmetal frame before referred to.

On the bacl; 1 ot the letter file, which is provided with two covers 2and 3, is 'fixed an open sheet metal trame consisting of three fixedmembers or walls 4, 5 and (i, and having a suitable height. The saidframe is closed on its fourth side by a hinged wall or flap 7, which issuspended at one end in the wall 6 of the trame as at 11 and at theother end is adapted to be connected to the opposite wall el by means ofa spring pressed bolt S engaging a slot 9 in said wall 4. The saidhinged wall 7 is of U shaped cross-section except at its ends. The bolt8 is held in the wall 7 by he sides oi said wall which are bent over thebolt as at 8, Fig. 4L, and one of said sides has a slot 1S through whichpasses a pin 10 iig's'crewed into the bolt, said pin and slot permittingthe bolt to be withdrawn from the slot 9 in the wall 4 and therefore ofrotating the wall or iiap 7 around the pivotal point 11.

A guide pin 2() is iixed to the wall 7 and around said pin is located acoiled spring 13, adapted to normally press the bolt 5 in a 'lorwarddirection into the slot 9 and lieep said bolt in closed position. Onsaid hinged wall 7 adjacent the point where said wall is suspended inthe wall 6, is riveted a ilat spring 12, the tree end ol which extendsto about the center ol the frame and passes between the two side membersof a bar 19 el" U-shaped 'cross section. A pin 14, is passed over thespring 12 through both members of the bar for the purpose of removing orliliting said bar when the side wall 7 is swung open about the point 11.On the [rame part 5 near the walls 4 and 6 are iixed pins 15 and 16,which act as guides for the bar 19.

The bar is pressed against the frame part 5 by the spring 12, when theletter iile is empty but by displacing a bow or slide 17, placed over oraround the hinged wall 7 and spring 12, the bar can be kept at therequisite distance from said `frame part 5 to exert the desired pressureon the documents placed in the file.

For inserting the documents in or removing them from the iile, theconnection between the two sides or walls 7 and 4 ol" the 'frame isunfastened by withdrawing the bolt 8, whereupon the wall 7, to which thespring 12 and bar 19 are attached can be rotated round the pivotal point11.

\Vhat I claim as my invention and desire to secure by Letters Iatent ol'the United States is 1. In a letter lile the combination oiz a sheetmetal frame inserted therein and having three iixed walls, a hinged wallsuspended in one oi said iixed walls, a spring attached to said hingedwall, a bar acted upon by said spring, means for regulating the pressureot' said spring on the bar, and means tor detachably connecting saidhinged wall to the frame aforesaid substantially as described.

2. In a letter ille the combination ol a sheet metal trame insertedtherein and having three fixed walls, a hinged wall suspended in one oisaid YIixed walls, a spring attacl'ied to said hinged wall, a bar actedupon by said spring, means for regulating the pressure ol said spring onthe bar, and a spring pressed bolt adapted to dctachably connect saidhinged wall to the lraine aforesaid substantially as described.

3. In a letter 'Iile the combination of a sheet metal frame insertedtherein and having three iXed Walls, a hinged Wall suspendl connect thelatter to the frame aforesaid ed in one of said fixed Walls, a springatsubstantially as described. 1o taohed to said hinged Wall, a bar of Usection In Witness whereof I have signed this acted upon by said spring,a slide on said I specification in the presence of two Witnesses.

hinged Wall adapted toregulete the pressure JOHANN JAKOBDETTWYLER-BRDERLIN. of the spring on the bar, guides for the latterWjtnesses: and a spring pressed boit slidably mounted in y i JBERTGROEFE,

said hinged Wall and adapted to detaehably i E. KLIMERT.

